医学英语呼吸系统

Inhaled air passes into the throat, or pharynx(咽),
where it mixes with air that enters through the mouth and also with food destined for the digestive tract. The pharynx is divided into three regions: (1) an upper portion, the nasopharynx(鼻咽), behind the nasal cavity;(2) a middle portion, the oropharynx(口咽), behind the mouth; and (3) a lower portion, the laryngeal pharynx(喉咽), behind the larynx. The palatine tonsils(腭 扁桃体) are on either side of the soft palate(软腭) in the oropharynx; the pharyngeal tonsils, or adenoids(咽扁桃体 ), are in the nasopharynx.
Dyspnea(呼吸困难) Apnea(呼吸暂停) Eupnea(平静呼吸) Tachypnea(呼吸急促)
II Roots for the Respiration Passageways
ROOT Nas/o(拉丁词源) MEANING nose EXAMPLE Nasal DEFINITION OF EXAMPLE Pertaining to the nose
Lower Respiratory Passageways and Lungs
The pharynx conducts air into the trachea, a tube
reinforced with C-shaped rings of cartilage(软骨) to prevent its collapse. Cilia in the lining of the trachea move impurities up toward the throat, where they can be eliminated by swallowing or by expectoration(咳痰). The larynx is shaped by nine cartilages, the most prominent of which is the thyroid cartilage at the front that forms the “Adam’s apple.” The opening between the vocal cords is the glottis(声门). The small leaf-shaped cartilage at the top of the larynx is called the epiglottis(会厌). When one swallows, the epiglottis covers the opening of the larynx and helps to prevent food from entering the respiratory tract.

I Suffix for Respiration
ROOT -pnea MEANING breathing EXAMPLE orthopnea DEFINITION OF EXAMPLE Difficulty in breathing except in an upright position(端坐呼吸) Decreased amount of oxygen in the tissues(缺/ 低氧) Increased carbon dioxide in the tissues(高碳酸血症) Difficulty in speaking(发音 困难)
bronchiole
Exercise 2 :



Write a word for each of the following definitions: 1. near the nose paranasal 2. inflammation of the pharynx 3. pertaining to the larynx 4. endoscopic examination of a bronchus 5. inflammation of the bronchioles 6. narrowing(-stenosis) of a bronchus 7. plastic repair of the larynx 8. surgical incision of the trachea
Medical Terminology（3）
The Respiratory System 呼吸系统
刘帅
研究生英语教研室（综合楼110）
Introduction of the Respiratory system
The main function of the respiratory system is to provide oxygen to body cells for energy metabolism and to eliminate carbon dioxide, a byproduct of metabolism. Because these gases must be carried to and from the cells in the blood, the respiratory system works closely with the cardiovascular system to accomplish gas exchange.
Instrument used to incise the trachea(气管刀)
Trache/o
trachea
II Roots for the Respiration Passageways
ROOT Bronch/o, bronch/i bronchiol MEANING bronchus EXAMPLE DEFINITION OF EXAMPLE bronchogenic Originating in a bronchus(支气管源的) bronchiolect asis Dilatation of the bronchioles(细支气管扩 张)
Hale Waihona Puke -oxiaLevel of oxygen
hypoxia
-capnia Level of carbon dioxide -phonia voice
hypercapnia
dysphonia
Exercise 1:
Use the suffix -pnea to build a word with
each of the following meanings: 1. painful or difficult breathing dyspnea 2. easy, normal (eu-) breathing 3. lack of (a-) of breathing 4. rapid rate(tachy-) of breathing
Rhin/o(希腊词源) nose
rhinorrhea
Discharge from the nose(鼻漏) Pertaining to the pharynx(咽的)
Pharyng/o
pharynx
pharyngeal
Laryng/o
larynx
laryngoscopy Endoscopic exam of the larynx(喉镜检查) tracheotome
At its lower end, the trachea divides into a right and a left main stem bronchus(支气管干) that enter the lungs. The right bronchus is shorter and wider; it divides into three secondary bronchi that enter the three lobes(肺叶) of the right lung. The left bronchus divides into two branches that supply the two lobes of the left lung. The smallest of the conducting tubes, the bronchioles( 细支气管), carry air into the microscopic air sacs, the aveoli(肺泡), whrough which gases are exchanged between the lungs and the blood.

Upper Respiratory Passageway：
Air enters through the nose, where it is warmed, filtered, and moistened as it passes over the haircovered mucous membranes of the nasal cavity. Cilia(纤毛), microscopic hair-like projections from the cells that line the nose, sweep dirt and foreign material toward the throat for elimination. Material that is eliminated from the respiratory tract by coughing or clearing the throat is called sputum(痰).